Piston-ring



H. P. MALONEY.

PlSTON RING- APPLICATIUN FILED JAN. 27,1919- 1,355,237. Patented Oct. 12, 1920.

i w w W /3 4;? Z7? 7 (9/3 ll} W W ATTORNEY UNITED STATES PATENT OFFICE.

HENRY P. MALONEY, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE-THIRD T0 HARRY HARRIS, OF ST. LOUIS, MISSOURI.

PISTON-RING.

Specification of Letters Patent.

Patented Oct. 12, 1920.

Application filed January 27, 1919. Serial No. 273,218.

T 0 aZZ whom it may concern Be it known that I, HENRY P. MALONEY, a citizen of the United States, and resident of the city of St. Louis and State of Missouri, have invented certain new and useful Improvements in Piston-Rings, of which the following is a specification containing a full, clear, and exact description, reference being had to the accompanying drawings, forming a part thereof.

My invention relates to improvements in piston rings and has for its primary object the construction of a one piece piston ring having lap} ed portions and means for bolding the lapped portions together.

Another object is to provide a one piece piston ring whereby the points or ends of the lapped portion are held next to the piston and therefore do not score the cylinder walls.

In the drawings:

Figure l is a plan view of my improved ring.

Fig. 2 is an edge view taken in the direction of the arrow 2 of Fig. 1.

Fig. 3 is an edge view of my ring with parts removed illustrating one of the lapped portions and the tongue carried thereby.

Fig. f is a section taken on the line 4- 1 of Fig. 1 looking in the direction of the arrow.

Fig. 5 is a section taken on the line 55 of Fig. 1.

Fig. 6 is a section taken on the line 66 of Fig. 1.

Fig. 7 is a section taken on the line 77 of Fig. 1.

Fig. 8 is a section taken on the line 8-8 of Fig. 3.

Referring to the drawings, 9 indicates the body portion of my improved ring which is provided with lapped or end portions 10 and 11. The lapped portion 10 is provided with an inclined or beveled tongue 12 and the lapped portion 11 is provided with similar inclined or beveled tongue 13. The inclined or beveled tongue 12 is located in an underout recess or groove 14: and the tongue 13 is seated in an under-cut recess or groove 15. It will be observed from this construction, that these tongues, which form the free ends of the lapped portion, are held against the piston and prevent it from commg m contact with the cylinder walls.

The inner contacting faces of the lapped portlons l0 and 11 are maintained in fluid tight contact by the tongues 12 and 13 seated in their respective under-cut recesses. It should be observed in this connection that any spreading apart of the lapped portions 10 and 11 will force the body of the ring against the cylinder wall.

It will be observed from the foregoing that the free end of the lapped portion 10 is locked against lateral movement and also the free end of the portion 11 is locked against lateral movement, and one of the characteristic features of my improvement is to construct a one piece piston ring having lapped portions and positive means for holding the lapped portions in fluid tight contact, and as previously pointed out, any spreading apart of the lapped portions forces the ring against the cylinder wall.

Having fully described my invention, what I claim is:

A one piece piston ring comprising a body portion provided with lapping extensions arranged axially side by side, each extension being provided with a tongue beveled on its outer face to form an acute angle with the lapping face, the adjacent portions of the body having undercut recesses to fit said tongues, thereby locking the ends of said extensions against lateral and radial displacement.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

HENRY P. MALONEY.

Witnesses:

A. S. JoHNsroN, EDWARD E. LONGAN. 

